The amount of water vapor in the air, usually given as relative humidity in percent.
example
Eine hohe Luftfeuchtigkeit von über 80 Prozent lässt uns die Hitze als noch drückender empfinden.
High humidity of over 80 percent makes us feel the heat as even more oppressive.
Usage tips
Word composition
The word is a clear compound of 'die Luft' (air) and 'die Feuchtigkeit' (moisture/humidity). 'Feuchtigkeit' itself is derived from the adjective 'feucht' (moist/damp). So the word literally describes the moisture in the air.
EXAMPLE
Im Badezimmer ist die Luftfeuchtigkeit nach dem Duschen besonders hoch.
In the bathroom, the humidity is especially high after showering.
Typical collocations
'Luftfeuchtigkeit' (humidity) is almost always described with the adjectives 'hoch' (high) or 'niedrig' (low). To give the exact value, you use the verb 'betragen' (to amount to/be).
EXAMPLE
Bei niedriger Luftfeuchtigkeit trocknet die Wäsche schneller.
With low humidity, the laundry dries faster.
Sentence structure and usage
To describe the level of humidity, you can form simple sentences with the verb 'sein' (to be). Alternatively, the formulation 'es herrscht eine ... Luftfeuchtigkeit' (there is a ... humidity) is often used.
EXAMPLE
Im Sommer ist die Luftfeuchtigkeit in den Tropen sehr hoch.
In summer, the humidity in the tropics is very high.
Compare with
near_synonym · confusable
Luftfeuchtigkeit vs Feuchtigkeit
moisture
'die Feuchtigkeit' and 'die Luftfeuchtigkeit' both have to do with water in the environment. 'Feuchtigkeit' is more general: it can be in the air, in walls, in clothing, or on surfaces. 'Luftfeuchtigkeit' refers only to the water vapor in the air and is often measured, for example as a percentage. The words can be confused because humid air can also cause moisture. If you are talking about the indoor climate or the weather, 'Luftfeuchtigkeit' is more precise. If something is clammy or slightly wet, 'Feuchtigkeit' fits better.
Luftfeuchtigkeit
Nach dem Regen war die Luftfeuchtigkeit im Zimmer sehr hoch.
After the rain, the humidity in the room was very high.
Feuchtigkeit
Im Keller hat die Feuchtigkeit Flecken an der Wand hinterlassen.
In the basement, the moisture left stains on the wall.